What distinguishes naṣṣ from ẓāhir?

Degrees of Indication: Ẓāhir, Naṣṣ, Mufassar, Muḥkam and Obscure Expressions

• Naṣṣ requires a later explanation by the speaker
• Ẓāhir is stronger than naṣṣ
• Naṣṣ excludes every possibility of specification and interpretation
• Naṣṣ is especially clear about the principal purpose of the speech